What exactly was in her system?
The way they were able to determine this is because a lot of alcohol, cacao, and rich meats were found in her system. This all came from the belief that she would be able to communicate better with the gods before she was sacrificed in their name. Sounds like a bad deal to us.
But the alcohol was probably a form of drug that was given to her, with a combination of other things, to calm her down. She most likely knew what was about to happen to her before her death and was in a constant state of fear and trauma. We don’t blame her for that.